package com.ruoyi.common.utils.ip;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.http.HttpUtils;

/**
 * 获取地址类
 * 
 * @author ruoyi
 */
public class AddressUtils
{
    private static final Logger log = LoggerFactory.getLogger(AddressUtils.class);

    // IP地址查询
    public static final String IP_URL = "http://whois.pconline.com.cn/ipJson.jsp";

    // 未知地址
    public static final String UNKNOWN = "XX XX";

    public static String getRealAddressByIP(String ip)
    {
        // 内网不查询
        if (IpUtils.internalIp(ip))
        {
            return "内网IP";
        }
        if (RuoYiConfig.isAddressEnabled())
        {
            try
            {
                String rspStr = HttpUtils.sendGet(IP_URL, "ip=" + ip + "&json=true", Constants.GBK);
                if (StringUtils.isEmpty(rspStr))
                {
                    log.error("获取地理位置异常 {}", ip);
                    return UNKNOWN;
                }
                JSONObject obj = JSON.parseObject(rspStr);
                String region = obj.getString("pro");
                String city = obj.getString("city");
                return String.format("%s %s", region, city);
            }
            catch (Exception e)
            {
                log.error("获取地理位置异常 {}", ip);
            }
        }
        return UNKNOWN;
    }


        private static final double EARTH_RADIUS = 6371; // 地球半径（单位：公里）

        public static double calculateDistance(double lat1, double lon1, double lat2, double lon2) {
            double dLat = Math.toRadians(lat2 - lat1);
            double dLon = Math.toRadians(lon2 - lon1);

            double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
                    Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2)) *
                            Math.sin(dLon / 2) * Math.sin(dLon / 2);

            double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));

            return EARTH_RADIUS * c;
        }

//        public static void main(String[] args) {
//            double lat1 = 40.712776; // 纽约市的纬度
//            double lon1 = -74.005974; // 纽约市的经度
//
//            double lat2 = 37.774929; // 旧金山的纬度
//            double lon2 = -122.419416; // 旧金山的经度
//
//            double distance = calculateDistance(lat1, lon1, lat2, lon2);
//            System.out.println("两个坐标之间的距离为：" + distance + "公里");
//        }


}
